Spice rack



FIG. 1 is a perspective view of a spice rack showing my new design, with the broken lines showing matter for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a spice rack, as shown and described. 